Table 1

Characteristics of the study cohort and index lesions

No subjects (%)
Total No patients1693
Males1074 (63.4)
Females619 (36.6)
Mean age (y)56
No adenomas
 One606 (35.8)
 More than one1087 (64.2)
Size largest adenoma1-150
 0.5–0.9 cm721 (42.6)
 ⩾1 cm972 (57.4)
Adenoma site1-150
 Colon right1-151 148 (8.7)
 Colon left1-164 1545 (91.3)
Worst histology1-160
 Tubular1132 (66.8)
 Tubulo-villous460 (27.2)
 Villous101 (6)
 High grade dysplasia233 (14)

  • ↵1-150 Size and location of adenomas refer to the larger lesion.

  • ↵1-160 Refers to WHO criteria.

  • ↵1-151 Includes caecum, ascending, transverse, and splenic flexure.

  • ↵1-164 Includes descending, sigmoid, and rectum